Manufacture of receptacles



H. JEPSEN MANUFACTURE OF RECEPTACLES Filed Sept. 19 I 1925 l mented May 153, lawn.

on ears i-inNnY Jnrsnn, or west nanrronn, oonnsorrcn'r, ASSIG-NOB T JEWELL BELTING era-q gas COMPANY, 015 HABTI TOEJJ, JQNNECTIGUT, A GOEFQEATION 0F CGNNECTIGUT.

MANUFACTURE OF REGEPTA'CLES.

Application filed September T his invention relates to the manufacture of bones, cases and other receptacles of leather or similar material. When cases are constructed of several pieces of leather in order to ensure maximum strength and attractive appearance the abutting edges of the adjacent walls are usually secured together by stitching. It the leather or other material from which the receptacle is to be built is heavy and thick, in making high class cases it has been customary to stitch the corners by hand which is a somewhat slow and costly operation particularly it the holes are first punched through the corners and then the thread passed through the holes and drawn tight by hand.

The object of the present invention is to provide a method of securing together the abutting edges of the article to be formed in a manner which retains the attractiveness and strength of stitched joints, but which is much quicker and cheaper to execute, as there are. more simple machine operations, and yetproduces joints that'are fully as strong it not stronger than it stiched by hand in the old way.

This object is' attained by stitching. on a machine, with thread of suitable strength, the edge of one piece which is to be joined with the edge of another piece. The loops of this stitching are drawn tightly against or'into the surtaceot the leather on the outside, while on the inside the stitch loops are left loose. The inside loops are then drawn so as to stand out from the inner surface of the stitched piece. The piece to be attached to the stitched piece is made up of a plurality of plies, the outside and inside layers being of leather or other material, with an intermediate sheet of solidified adhesive or cementing; sulista-nce which is preferably waterproof. The intermediate cementing sheet is then subiected to the action of a solvent which reduces it or its surfaces to an adhesive condition, and the edges of this composite piece engaged with the open stitch loops on the inside of the other piece, one layer being on the inside and the other on the outside of the stitch loops. i V-ith the parts thus assembled they are pressed to- 1 er until the adhesive solvent permeate. the pores of the leather or other material and solidifies so as to strongly cement the piece o ether and e nbedthe stitching securely between the plies that are thus eequired strength. on the outside are drawn. tightly against or 19, 1925. Serial No. 57,291.

merited together. By this method the joined edges ot the ieces are practically stitched together and s iould one loop of the stltching become broken the other loops cannot unravel or draw out as they are completely en'rbedded in the adhesive between the tightly cemented pieces.

The article shown tor the purposeot illustrating the practice of this invention is made of substantial leather and is designed for contaiiiing a small camera. Such a case will be described, although it isito be understood that the invention is not limited to the spe-- cial shape or size of the article nor the particular material from which it is made, or the use to which it is to .be put, as many modifications in form maybe produced by employing the method set forth.

In the accompanying drawings Fig. 1 shows a front elevation of a finished casing. Fig. 2 shows a side elevation. Fig. 3 is a view of the inside of a portion of the stitched piece which in this instance is to form the front, bottom, back, top and flap ot the case. Fig. i is an edge View of the stitched piece with the stitches drawn out from the inside. Fig. 5 is a view of one of the side pieces. Fig. 6 is an edge View of the side piece with the layers separated to indicate its construction. Fig. '7 is a view on larger scale with a portion in section showing the manner in which the stitches pass through one piece and are embedded between the other pieces.

In making the case illustrated according to this invention a strip of leather 0t suiticien't length to form the front 1, bottom 2, back 3, top a and flap 5 which is designed to be fastened down to the front by a snap 6, is, in a flat condition, run through a common commercial sewing machine and provided tor a suitable distance on both edges with stitching 7 of thread having the re- 3.) These stitches into the outer surtac'eot the leather. On the inside the stitches may be made over any suitable core which when removed leaves the loops loose on the inside. The ends 8 of the th-readsare pulledso as to draw-the stitched end of the strip into ,tieshape, thus forming the front, bottom and backer the case. and

tied so as to hold the leather in this shape. Fastening the thread, ends-together in this wa "also draws the loops out from the nner ear-taco of the leather as illustrated inFifg.

lll)

The sides 9 of the case are cut from leather or other material to a shape that will lit the edges of the bent stitched section of the. other piece. (Fig. 5.) Each side is composed of two layers 10 of leather with an intermediate layer of sheet cen'ienting material ll. which cementing layer may be if desired. sheet. celluloid. In practice the upper ends of these layers of the sides are usually stuck together. leaving the lower ends separated, as illustrated in Fig. 6. The tree section of the intermediate cementing layer is then treated with a solvent, preterably by dipping it into a vessel containing a suitable liquid, which if the adhesive sheet is celluloid may be a solution of acetone. This is lone without wetting the outer leather layers. This side piece with the surt'aces oi the cementing sheet coated with solvent or in a partially dissolved condition. is then thrust into the U-shaped section of the stitched piece until the edges of the composite side {it closely to the edges of the stitched piece and the stitch loops are between the inner and outer layers of leather ot the side piece. lVith parts assembled in this manner the article is placed in a suitable form or press and held in shape while the adhesive permeates the fibers of the leather and becomes set. This not only provides stitt waterproof sides. but firmly ein beds the stitched threads in the waterproof adhesive between the securely united layers of the sides.

As a result of this construction the pieces oi leather comprising the article are fastened together in a manner that simulates the usual stitching, and practically as strong and durable as if the parts were fastened together in the old way by hand stitching, which improved method of making the cases is much cheaper than the old. lVith the sides made up of two pieces of leather it is possible to slit the outer layer betore it is united with the inner to provide loops 12 for the passage of carrying straps. This leaves the inside of" the case smooth and avoids the necessity of riveting or otherwise attaching loops to the sides for the carrying strap.

The invention claimed is:

1. The method of forming receptacles ot pieces of leather or the like, which consists in providing the edge of one of the pieces to be secured with stitching. the loops oi which are drawn tight against the outer surface of the piece and drawn away from the inner surface of the piece. forming the other piece of outer and inner plies with an inter mediate ply of sheet cementing material. treating the cementing ply with solvent, fitting the edge of the composite piece to the edge of the stitched piece with a ply inside and a ply outside of the stitch loops. and holding the plies in this relation until the cementing material intermediate the plies has become set.

Thev method of forming receptacles of pieces of leather or the like, which consists in. providing the edge of one 01'? the pieces to be secured with stitching. the loops of which are drawn tight against the outer surlace of the piece and dra vn away from ihe inner surface (it the piece, applying the ulge of another piece to the tirst mentioned piece inside of the stitch loops. ap 'ilying the edge of a similar piece to the tirst mentioned riece outside of the stitch loops, and cementing said pieces together with the stitch loops bet veen their edges.

The method of forming receptacles of pi.ces of leather or the like, which consists in providing the edge of one of the pieces to be secured with stitching, the loops of which are drawn tight. against the outer surface of the piece and drawn away from the inner surface of the piece, separating the edge of the piece to be secured thereto and applying one separated section to the inside and one separated section to the outside of the stitch loops, and cementing said separated sections together with the stitch loops between. Y

t. The method of forming receptacles of pieces of leather or the like, which consists in providing the edge of one ol. the pieces to be secured with stitching, the loops of which are drawn tight against the outer surface of the piece and drawn away from the inner surface of the piece. fitting the edge of acomposite piece to the stitched piece with a ply ot' the composite piece inside and a ply oi the COH'IPOSli'Q piece outside of the stitch loops, and cementing the plies of the composite piece together.

3. The method of forming receptacles of pieces of leather or the like, which consists in providing the edge of one of the pieces to be secured with stitching. the loops of which are drawn tight against the outer surface of the piece and drawn away from the inner snrtace ot the piece. forming the other piece of plies with an intermediate ply of sheet solidified adhesive material, coating the sheet of adhesive material with a liquid sol vent. and fitting the composite piece to the sti ched piece with :1 ply inside and a ply outside of the stitch loops, and retaining the pieces thus assembled until the dissolved adhesive has become set.

6. The method of forming receptacles of lJlGCOS of leather or the like. which consists in providing the edge of one of the pieces to be secured with stitching, the loops of which on the inside are drawn away from the surface of the piece, forming the other piece of outer and inner plies with an intermediate ply of cementing material. fitting the edge of the composite piece to the edge of the stitched piece with :1 ply inside and :1 ply outside of the s itch loops, a d holding the plies together until the cementing nmter'el has firmly united them with the stitch loops hetween.

7. As a new article of manufacture, a receptacle formed of leather or the like, having a stitched Wall and a composite well fitted thereto the plies ot' the composite Well heii'ie een'iented together with loops of the 10 stitching cement between the edges of the composite Wall.

8. As a new article of manufacture a receptacle formed of leather or the like having a stitched Wall, the stitching loops extending through said Well and being tight on one side and loose on the other side, and a composite wall fitted thereto, the plies of the composite well being; cemented together with the loose loops of the stitching cemented between the plies.

HENRY JEPSEN. 

